I changed my name legally when I was 19. I was breaking free of generations of dysfunction and taking my life for my own. This is still something that I am proud of and so glad I did. I feel like I was able to break so many generational 'curses' so to speak and raise my kids with a whole new name... that's my experience, so I'd say go for it. It sounds like it could be similarly meaningful and a 'new' start for you as well!